Nailing-machine.



No. 763,927. PATENTED JUNE 28, 1904. C. F. PYM.

NAILING MACHINE.

APPLICATION FILED MAY 26. 1903,. N0 MODEL. 3 SHEETS-SHEET 1.

lull lll No; 763,927- PATENTED JUNE ZB, 1904.

O. F. PYM.

NAILING MACHINE.

APPLICATION FILED MAY 25. 1903.

3 SHEETS-SHEET 2.

N0 MODEL.

WITNESSES m: NOFW$ PETERS o0. vnoTo-Ln'uu WASNINGTON, u. c.

4 0 9 1 no 2 E N U TU D E T N E T A P NAILING MACHINE.

APPLICATION rum) MAY 25. 1903 N0 MODEL.

'IIIIII 1. V VFW T 013 WITNESSES 7'? UNITED STATES i Patented June 28,1904. i

PATENT FFICE.

CHARLES F. PYM, OF ESSEX, CANADA, ASSIGNOR OF ONE-HALF TO KRENTLERBROTHERS COMPANY, OF DETROIT, MTCHIGAN.

NAILING-IVIACHINE.

SPECIFICATION forming part of Letters Patent No. 763,927, dated June 28,1904.

Application filed May 25, 1903.

To all Ill/1107771 it may concern.-

able others skilled in the art to which it pertains to make and use theinvention, reference which form a part of this specification,

ment in the devices employed in connection with the hopper and thenail-chute leading from the hopper to the hammer of that class ofnailing-machines in which the nails are deposited in a mass in a hopperfrom which there leads a nail-chute to and under the ham mer of themachine and in which the nails after being so deposited areautomatically ar-g ranged in a longline in the nail-chute that leadsfrom the hopper to the hammer.

In the drawings, Figure 1 is a side eleva- Fig. 2 is a front eleva- Fig.3 is a sectional elevation showing Fig. 4

tion of the machine. tion. the nail-hopper and the nail-chute. shows asection across the hopper. Fig. 5 is a detail showing the connection ofthe nail chute and hopper. Fig. 6 is a section across the nail-chutenear the entrance end thereof. Fig. 7 is a perspective of the hopperwith the cover of the fixed part thereof thrown back.

Fig. 8 is a side view of the finger which de- I taches from the line oftacks the one to be driven, holds back the line, and delivers theselected tack under the hammer. Fig. 9 is a horizontal section of thesame. Fig. 10 is a perspective of the same.

The entire machine is supported on a pedestal A, which supports theparts of a lastingmachine.

hammer and lower end of the nail-chute 2.) Above that part whichpertains especially to the lasting-machine on a suitablesupportingbracket 3 is a nail-holding hopper, one part of which, 1, isstationary and another part of which, 5, is fixed to a rotating shaft 6,that (Seen immediately adjacent to the 1 Serial No. 158,661. (No model.)

is actuated by a screw 8 and worm-wheel 7,

Be it known that 1, CHARLES F. PYM, a sub-Z ject of the King of GreatBritain, residingat- Essex, county of Essex, Province of Ontario,Canada, have invented a certain new and use; ful Improvement inNailing-Machines; and I declare the following to be a full, clear,andexact description of the same, such as will enand these are connectedby achain of gearing to themain drive-wheel 9, on the shaft of whichthere is a cam 10, that actuates the hammer-handle 11. .This inventiondoes not relate to these parts of the machine, but solely to the meansof arranging the nails which are put in the hopper 5 and placing them ina chute through which they slide and from which they are delivered tothe hammer 11. being had to the accompanying drawings,

The rotating part 5 of the hopper is pro- 3 vided on its inner surfacewith vanes 5*, which This invention relates to nailing-machines. The obect of the inventlon is an improvecatch and carry up and drop thev nailsthat are placed in the hopper. The nails are dropped in quantities ontheface of plates 12 and 13, whose surfaces are warped, but converge to along and narrow opening into which project the upper ends 14: and 15 ofthe side bars of the chute 2. The upper ends of the side bars which formthis chute lead through the walls of the fixed part 4 of the hopper intothe cavity within the hopper and are located beneath the opening betweenthe warped surfaces of the two. plates 12 and 13. Between the side barsof the race is a deep narrow passage wide enough to take the body of anail, but so narrow that the head of the nail willnot sink into it. I

The two side bars mane 15 are covered by a plate 16, that does notextend entirely to the end of the bars, but reaches into the hopper onlyfor a short distance, leaving the most of the included ends of the sidebars uncovered. The plate 16 extends along the bars outside the hopperfor a distance and is then supplemented by another cover-plate 17. Thecoverplate 16 is not fixed, but is arranged to reciprocate. Thecover-plate 17 is fixed to the side bars of the race. At the jointbetween 16 and 17 each of the parts extends half-way over the passagebetween the bars and half-way over the heads of any nailswhich may betraveling along the passage, so that all nails in the passage under themain part of the coverplate 16 are covered thereby, all nails that aretraveling along the passage covered by the plate 17 are covered thereby,and all nails in transit that have not fully escaped from un' der theplate 16 and have not fully entered under the plate 17 are partiallycovered by one or the other of the two plates.

The plate 16 is reciprocated by a lever 18, pivoted to a bracket 19 andactuated by a pitman 20, that reciprocates through an opening in thefixed part 4: of the hopper and is itself actuated by a cam 21 on theshaft 6 and is retracted by a spring 22, that reaches from the lower endof the lever 18 to the fixed part 1 of the hopper. The end of the lever18 engages in a socket 2 on the face of cover-plate 16, and thereciprocation 0f the cover-plate 16 causes the nails that have enteredthe chute to travel regularly along it. The pitman 20 is provided with ayoke 201, that reaches over a multiple-toothed cam 21 on shaft 6. Aholding-stud 203, with friction-roll thereon, prevents the yoke fromlifting out of place.

It is not intended that the plate 16 should bear strongly against any ofthe nail-heads. Its action has more the effect of keeping the nails atright angles to the faces on which the 'heads rest, because from theforce of gravity the point of the nail tends to drop and tends to forcethe forward edge of the head of the nail outward and slightly upward,causing it to bear against the face of the cover-plate, and thecover-plate having a reciprocating motion gives to the nail while inthis position a slight push, tending to straighten it and causing it toslide freely on its course and to force it sufficiently to keep thenails which have already entered under the cover-plate 17 in motion.

Many more nails are lifted and thrown over by the vanes 5 than can bereceived in the passage between the side bars of the chute. Those whichare not received drop to the bottom of the hopper and are again liftedand thrown over. WVhen the nails reach the bottom end of the chute, theforward one of them comes to rest against a reciprocatory finger 27,held in a reciprocating arm 28. The finger 27 slides or can slide in asocket at the front end of the arm 28. It is normally held out by spring29, against which it can yield in case the front end of the finger 27strikes an imperfect nail or similar impediment. The finger is normallyheld against either the nail in the hole 30 or against the hammer thatis in the hole 30 by a leaf-spring 31. The front end of the finger 27 iswedge-shaped, so that when the arm 28 is retracted and the point of thefinger withdrawn from over the nail-passage and the finger is againthrust across the nail-passage the extreme point of the finger entersbetween the nail which is now close up against the hammer and the nextsucceeding nail, and the wedge shape of the point of the finger causesthe finger to swing against the tension of the spring 31, and thiscontinues so long as the hammer remains in the nailchannel 30. WVhen thehammer is next thrown upward, the tension of the spring 31 causes thefinger 27 to push the nail 181 into the nailhole 30, through which it isforced by the hammer at its next stroke, while the finger retractspreparatory to make its next forward movement and separate the nextsucceeding nail from those behind it. The front end of the finger 27 isforked and the upper-member of the fork slightly longer than the lowerend. In the chute, at the passage where the finger crosses the chute,there is left a part of the metal of each of the side pieces to engagebetween the forks 271 and 272 of the finger, and these parts 273 and 274form side guards for the body of the nail and prevent the nail fromswinging into the opening that crosses the chute. With this constructionshort nails may be used-so short that they will otherwise be liable toswing into the opening and be troublesome. The forward end of theleaf-spring 31 is bent over to form a short hook 34:, that engages in anotch 35 across the finger 27, and the spring 31 lies parallel with themain part of the slide 33 and, together with the sliding part 33, formsa socket into which the otherwise loose finger 27 is inserted. Thefinger 27 thus has a motion due to the reciprocation of the arm 28, apossible reciprocatory motion independent of the arm 28 against thespring 29, and a swinging motion across the line of reciprocatorymotion.

What I claim is- 1. An isolating-finger for nail-driving machines havingin combination a reciprocatory arm provided with a socket in the endthereof, a spring in said socket, a finger-holder engaging in saidsocket against said spring, a finger engaging against the side of saidholder and provided with a notch and a hooked leafspring secured to theholder and engaging by means of its hook in said notch, substantially asdescribed.

2. An isolating-finger for nail-driving machines, comprising incombination a reciprocatory arm, a finger-holder yieldingly held to theend of said arm, a finger carried by said holder, a hooked leaf-springsecured to the holder engaging the finger with side pressure and holdingit in place on the holder, substantially as described.

3. In a nailing-machine, in combination with means for arranging nailsin a line and with a hammer, an isolating device comprising areciprocatory arm, a yielding finger-holder carried at the end thereof,a finger carried by said holder, a hooked leaf-spring secured to theholder and engaging the finger to prevent independent reciprocatorymotion of finger and holder and allow anoscillatory motion of thefinger, substantially as described.

4. In a nailing-machine, in combination with means for arranging nailsin a line and with means for driving an isolated nail, an isolatingdevice comprising a reciprocatory arm provided with a socket in the endthereof, a spring in said socket, a finger-holder held. in said socketand adapted to yield along its longitudinal axis, a finger and aspring-hook holding the finger to the finger-holder, substantially asdescribed.

5. In a nailing-machine, in combination with a nail-chute and means fordropping nails into the end thereof, a forcing means consisting of areciprocatory part covering the chute in part, a fixed part coveringanother part of the chute, the reciprocatory part and the fixed partlapping, and at the lap each part extending a part of the way over thechute, whereby there is provision for confining the nails in the chuteWhile passing from the reciprocatory part to the fixed part,substantially as clescribed.

6. In a nailing-machine, the combination of a hopper, a nail-chute, arotary nail-lifter, guides in the hopper, a fixed cover over part ofsaid chute, a reciprocatory cover over another part of said chute, meansfor producing reciprocation of part of said cover, each of said coverparts being provided with a part that extends partly over the chute andextends along the middle line thereof, substantially as described.

7. An isolating-finger for nail-driving machines, comprising incombination a reciprocatory arm, a finger-holder held to yieldlongitudinally of said arm, a finger carried by said holder, aleaf-spring arranged to hold the finger in place with respect to theholder and to allow a side yield to said finger, substantially asdescribed. 1

In testimony whereof I sign this specification in the presence of twowitnesses.

CHARLES PYM.

